I **hate** the tendency to blame parents and especially moms for things. I think about how they used to blame parents--and especially moms--for autism, for not being loving enough. It really does feel to me like a case of "is something inexplicably awful happening in your family? It must be because you're defective in some way/not doing it right."

Yeah, this one in particular feels extremely regressive/reactionary to me because it's a disorder that's heavily associated with teenage girls, ergo with the moms of teenage girls. Whereas so many other disorders that don't have those gendered associations are not usually tied to motherhood in that particular way -- e.g. we don't automatically assume it's your mom's fault if you have depression, if you are bipolar, if you're an alcoholic. Lousy parenting might certainly exacerbate an existing tendency towards any of those things, but we don't usually have this knee-jerk tendency to assume that someone is an alcoholic because their parents, and their mom especially, fucked up. (I mean, the assumption might be lurking there in a low-grade kind of way, and for similar kinds of reasons to why it comes out so strongly with eating disorders, but it doesn't usually come out that strongly, at least not in my general experience.)